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| | | /* |
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| | | Simple DirectMedia Layer |
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| | | Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org> |
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| | | Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org> |
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| | | |
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| | | This software is provided 'as-is', without any express or implied |
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| | | warranty. In no event will the authors be held liable for any damages |
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| | |
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| | | SDL_BLENDMODE_MOD = 0x00000004, /**< color modulate |
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| | | dstRGB = srcRGB * dstRGB |
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| | | dstA = dstA */ |
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| | | SDL_BLENDMODE_MUL = 0x00000008, /**< color multiply |
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| | | dstRGB = (srcRGB * dstRGB) + (dstRGB * (1-srcA)) |
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| | | dstA = (srcA * dstA) + (dstA * (1-srcA)) */ |
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| | | SDL_BLENDMODE_INVALID = 0x7FFFFFFF |
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| | | |
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| | | /* Additional custom blend modes can be returned by SDL_ComposeCustomBlendMode() */ |
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| | |
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| | | /** |
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| | | * \brief Create a custom blend mode, which may or may not be supported by a given renderer |
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| | | * |
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| | | * \param srcColorFactor |
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| | | * \param dstColorFactor |
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| | | * \param colorOperation |
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| | | * \param srcAlphaFactor |
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| | | * \param dstAlphaFactor |
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| | | * \param alphaOperation |
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| | | * \param srcColorFactor source color factor |
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| | | * \param dstColorFactor destination color factor |
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| | | * \param colorOperation color operation |
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| | | * \param srcAlphaFactor source alpha factor |
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| | | * \param dstAlphaFactor destination alpha factor |
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| | | * \param alphaOperation alpha operation |
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| | | * |
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| | | * The result of the blend mode operation will be: |
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| | | * dstRGB = dstRGB * dstColorFactor colorOperation srcRGB * srcColorFactor |
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